(:*******************************************************:)
(: Test: K-FilterExpr-89                                 :)
(: Written by: Frans Englich                             :)
(: Date: 2007-11-22T11:31:20+01:00                       :)
(: Purpose: A truth predicate that always match.         :)
(:*******************************************************:)
deep-equal(remove((1, 2, 3, current-time()), 4)[true()], (1, 2, 3))